Used 2021 GMC Yukon for Sale nearPeterborough, ON

How much does the 2021 GMC Yukon cost?

Prices have softened 16.55% compared to this time last year, making it a favourable time to shop this model year.

There are 66 listings available, which suggests a modest amount of inventory for shoppers to compare.

Is the 2021 GMC Yukon a good car?

Yes — the 2021 GMC Yukon earns a 5/5 user rating and a 7.67/10 expert rating. The model scores 9/10 across Look and feel, Technology, and Safety.

Owners consistently praise the luxurious feel, spacious interior, impressive tech features, and extremely comfortable ride. The Yukon’s redesigned packaging also makes it a strong fit if you want a full-size SUV with more passenger space and cargo space, plus a more refined ride and handling balance.

With 34.8% of listings marked as good or great deals, there is still some room to shop selectively.

Is the 2021 GMC Yukon reliable?

Owners rate it 5/5, a strong signal of long-term satisfaction.

The owner feedback points to a dependable, trouble-free ownership experience, with buyers repeatedly highlighting the Yukon’s luxurious feel, spacious cabin, and comfortable ride. The expert assessment also supports that sense of durability and everyday confidence by describing the SUV as capable, refined, and improved in ride quality and handling.

The maintenance and ownership picture is helped by the Yukon’s broad mainstream mechanical setup, but used buyers should still watch for higher running costs and make sure the vehicle has been properly maintained.

What should I look for when buying a used 2021 GMC Yukon?

Key things to evaluate:

• Trim level: The SLE, SLT, AT4, and Denali each bring a different mix of equipment and character. The base SLE is the most stripped-back, while the Denali adds the most upscale cabin treatment and the most advanced available driver assistance features.
• Powertrain: You can find a standard 5.3-litre V8, an available 3.0-litre inline six-cylinder turbo-diesel on most trims, and a 6.2-litre V8 that is standard on Denali. The 6.2-litre V8 delivers strong acceleration, but it is not the most efficient choice.
• Safety package: Standard equipment includes forward collision warning, daytime pedestrian detection, automatic emergency braking below 80 km/h, automatic high-beam headlights, Teen Driver, a rear-seat reminder, and OnStar crash response and crisis assistance. Starting with SLT, you also get blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. Rear pedestrian alert is available on SLT and AT4 and standard on Denali. Adaptive cruise control and enhanced automatic emergency braking are reserved for Denali.
• Infotainment: All 2021 Yukons get a 10.2-inch touchscreen with wireless Apple CarPlay, wireless Android Auto, and over-the-air updates. Higher trims can add wireless device charging, navigation, a 14-speaker Bose Performance Series audio system, and rear-seat entertainment with dual 12.6-inch displays.
• Fuel efficiency: The 6.2-litre V8 with 4WD is rated at 16.8 L/100 km city, 12.4 highway, and 14.8 combined. In testing, it returned 16.3 L/100 km on one loop and 14.5 L/100 km on another.

Which 2021 GMC Yukon trim should I buy?

The 2021 GMC Yukon is offered in 4 trim levels: SLE, SLT, AT4, and Denali.

Here's the short version:

• SLE: This is the entry point if you want the Yukon’s size, standard safety tech, and core infotainment without paying for extra luxury or convenience features. It makes sense if you want the most affordable path into the model.
• SLT: This is the best-value trim for many shoppers because it adds important driver-assistance upgrades, including blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. It gives you a more complete everyday package without jumping all the way to Denali pricing.
• AT4: Choose this if you want the Yukon’s more adventurous character. It adds off-road-focused hardware such as improved approach angle, skid plates, and all-terrain tires.
• Denali: This is the luxury pick, with the most upscale cabin design, the standard 6.2-litre V8, rear pedestrian alert, adaptive cruise control, and enhanced automatic emergency braking. It is the right choice if you want the most premium Yukon experience.

The safety-package gap to remember is that adaptive cruise control and enhanced automatic emergency braking are only available on Denali.

Is now a good time to buy a used 2021 GMC Yukon?

This looks like a moderate, selective buyer’s market, so you can shop with some leverage if you are patient.

• Deal availability: 34.8% of listings are priced as good or great deals.
• Inventory: There are 66 listings available.
• Price trend: Prices have softened 16.55% compared with last year.

If you find a listing below $54,624 CAD, that's toward the low end of the year-round range and worth acting on quickly.

What is the 2021 GMC Yukon’s resale value?

The current average of $54,624 CAD sits slightly below last year's $65,459 CAD.

That price movement suggests the market has cooled, which can be helpful if you are buying now but less favourable if you plan to sell soon. A softer market usually means future sellers may need to price more aggressively to stand out, especially if similar Yukons are widely listed. Even so, the Yukon’s strong owner satisfaction should help support demand over time.

Vehicles with strong owner satisfaction ratings, like this model year's 5/5, tend to retain buyer demand, which supports resale value over time.

Is the 2021 GMC Yukon safe?

The 2021 GMC Yukon earns a 9/10 safety score from our experts.

Standard safety equipment includes forward collision warning, daytime pedestrian detection, automatic emergency braking below 80 km/h, automatic high-beam headlights, Teen Driver, a rear-seat reminder, and OnStar crash response and crisis assistance. Starting with SLT, you also get blind-spot warning, rear cross-traffic warning, lane-departure warning, and lane-keeping assistance. Rear pedestrian alert is available on SLT and AT4 and standard on Denali, while adaptive cruise control and enhanced automatic emergency braking are reserved for Denali.

One important caveat is that crash-test ratings were unavailable in the review material.

Should I buy a 2021 GMC Yukon or consider a different year?

If you're weighing the 2021 against nearby model years, here's how to think about it:

Choose the 2021 if:

• 34.8% of listings are priced as good or great deals.
• Price trend: Prices have softened 16.55% compared with last year.
• Owners rate it 5/5 — a strong satisfaction signal.
• The redesign brings more passenger space, more cargo space, and a more refined ride.

Consider the 2022 if:

• At $63,481 CAD, the 2022 costs more than the current year's $54,624 CAD average.
• It adds a standard 12-inch driver information centre and enhanced connectivity.

The bottom line: The 2021 is the better value if you want the redesigned Yukon’s space, comfort, and tech without paying the newer-year premium. If you are shopping on a tighter budget, the 2021 is the smarter path; if you want the newer display and connectivity upgrades, the 2022 is worth the extra money.

These recommendations are based on CarGurus' proprietary market data from September 29, 2026, CarGurus experts' opinions, and generative AI.